常规重铬酸钾法测定化工高氯废水中化学需氧量的方法探讨

The Discussion of the Routine Method Which Uses the Potassium Determining Chemical Oxygen Demand of the High Chlorine Industry Chlorine Waste Water

常规重铬酸钾法测定化工高氯废水中化学需氧量是在基本了解废水中氯离子含量后,加入定量的固体硫酸汞进行测定,而本方法在加入硫酸汞的步骤上由固体改为30%硫酸汞溶液,通过控制加入硫酸汞的量,最大限度的掩蔽水样中氯离子的含量,进而获得准确的水样中化学需氧量的含量。

In the conventional potassium dichromate method determines chemical industry high chlorine waste water the chemical oxygen demand was after the basic understanding waste water the chloride ion content, added the quota the solid mercuric sulfate to carry on the determination, but this method in added mercuric sulfate in the step to change 30% mercuric sulfate solution by the solid, added the mercuric sulfate through the control the quantity, the concealed water sample in maximum limited the chloride ion content, then obtained in the accurate water sample the chemical oxygen demand content.